Ontario Science Centre

Ontario Science Centre
Ontario Science Centre in 2017
Location of the Ontario Science Centre in Toronto
Former name
Centennial Museum of Science and Technology
EstablishedSeptember 26, 1969 (1969-09-26)
Location770 Don Mills Road
Toronto, Ontario
M3C 1T3
Coordinates43°43′00″N 79°20′18″W / 43.71667°N 79.33833°W / 43.71667; -79.33833
TypeScience centre
AccreditationAssociation of Science and Technology Centers (ASTC)
Visitors900,225
CEOPaul Kortenaar
ChairpersonJohn Carmichael
ArchitectRaymond Moriyama
OwnerGovernment of Ontario
Nearest parkingPaid parking on site
Websitewww.ontariosciencecentre.ca

The Ontario Science Centre (OSC; originally the Centennial Museum of Science and Technology) is a science museum and organization based in Toronto, Ontario, Canada. Its original location opened to the public in 1969 and was located near the Don Valley Parkway about 11 kilometres (6.8 mi) northeast of downtown on Don Mills Road in the former city of North York. It was built down the side of a wooded ravine formed by one branch of the Don River located in Flemingdon Park.

In 2023, Premier of Ontario Doug Ford announced the Ontario government's plan to replace the Ontario Science Centre with a smaller institution on the Toronto waterfront. The following year, the government announced that the Don Mills location would close permanently after an engineering report identified a high risk of roof collapse. Both decisions have been met with considerable public opposition.